Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902311 | Air purification process | Kent Dingfors, Sven Melker Nilsson | 1990-02-20 |
| 4431542 | Filter and method of producing the same | Kent Dingfors | 1984-02-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902311 | Air purification process | Kent Dingfors, Sven Melker Nilsson | 1990-02-20 |
| 4431542 | Filter and method of producing the same | Kent Dingfors | 1984-02-14 |